US4226915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesive tape or sheet
Assignee: Kao Corp
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Filing: 1978-11-02
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Granted: 1980-10-07
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Expires: 1998-11-02
Abstract
Abstract A pressure-sensitive adhesive tape or sheet comprising an air-permeable substrate having coated thereon, an adhesive composition comprising (a) 3 to 25% by weight of a water-soluble polyol and (b) 1 to 25% by weight of a water-soluble or water-swellable polymer, the sum of the contents of the components (a) and (b) being at least 6% by weight, with the balance of the adhesive composition being an adhesive.
Inventors
- 👤 Eiji Iijima
- 👤 Yoshimi Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:10
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61L15/58; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31931; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
163 words
A pressure-sensitive adhesive tape or sheet, comprising an air-permeable substrate having coated thereon a layer of an adhesive composition, said adhesive composition consisting essentially of a substantially homogeneous mixture of (a) 3 to 25% by weight of a water-soluble polyol selected from the group consisting of glycerin, propylene glycol, butylene glycol, hexylene glycol, polyethylene glycols having a molecular weight not higher than 1000, ethylene glycol, polypropylene glycol having a molecular weight of up to 1000, mannitol and sorbitol, (b) 1 to 25% by weight of a water-soluble or water-swellable polymer selected from the group consisting of polyvinyl alcohol, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxyethyl cellulose, sodium alginate and polyethylene oxides having a molecular weight higher than 300,000, the sum of amounts of the components (a) and (b) being at least 6% by weight, based on the weight of the adhesive composition, and the balance of the adhesive composition essentially is a pressure-sensitive adhesive capable of adhering to and safe for use on
Claim 2
Dependent Claim
163 words
A pressure-sensitive adhesive tape or sheet, comprising an air-permeable substrate having coated thereon a layer of an adhesive composition, said adhesive composition consisting essentially of a substantially homogeneous mixture of (a) 3 to 25% by weight of a water-soluble polyol selected from the group consisting of glycerin, propylene glycol, butylene glycol, hexylene glycol, polyethylene glycols having a molecular weight not higher than 1000, ethylene glycol, polypropylene glycol having a molecular weight of up to 1000, mannitol and sorbitol, (b) 1 to 25% by weight of a water-soluble or water-swellable polymer selected from the group consisting of polyvinyl alcohol, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxyethyl cellulose, sodium alginate and polyethylene oxides having a molecular weight higher than 300,000, the sum of amounts of the components (a) and (b) being at least 6% by weight, based on the weight of the adhesive composition, and the balance of the adhesive composition essentially is a pressure-sensitive adhesive capable of adhering to and safe for use on
Claim 3
Dependent Claim
32 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 wherein said adhesive is a member selected from the group consisting of natural rubbers, grafted natural rubbers and cross-linked natural rubbers.
Claim 4
Dependent Claim
27 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 wherein said adhesive is a member selected from the group consisting of polyisoprenes and grafted polyisoprenes.
Claim 5
Dependent Claim
57 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 wherein said adhesive is a member selected from the group consisting of poly(alkyl acrylates) having 1 to 10 carbon atoms in the alkyl moiety, copolymers of vinyl acetate with an alkyl acrylate having 1 to 10 carbon atoms in the alkyl moiety and vinyl acetate-ethylene copolymers.
Claim 6
Dependent Claim
73 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 wherein the water-soluble polyol (a) is glycerin, the water-soluble or water-swellable polymer (b) is polyvinyl alcohol, and the adhesive is a member selected from the group consisting of poly(alkyl acrylates) having 1 to 10 carbon atoms in the alkyl moiety, copolymers of vinyl acetate with an alkyl acrylate having 1 to 10 carbon atoms in the alkyl moiety and vinyl acetate-ethylene copolymers.
Claim 7
Dependent Claim
38 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 in which said adhesive composition is prepared by homogeneously blending said water-soluble polyol and said water-soluble or water-swellable polymer with an aqueous latex of said pressure-sensitive adhesive.
Claim 8
Dependent Claim
48 words
A pressure-sensitive adhesive tape or sheet as claimed in claim 1 wherein the water-soluble polyol (a) is glycerin, the water-soluble or water-swellable polymer (b) is polyvinyl alcohol, and the adhesive is a member selected from the group consisting of natural rubbers, grafted natural rubbers and cross-linked natural rubbers.
References Cited (Backward Citations)
US3632740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |